Hello, I am facing the following problem: I have a Proxmox cluster (7.4.3) consisting of 8 nodes (dell r630), each node has a locally installed nvme ssd samsung evo 970 plus and NFS network array (Raid10-samsung PM series) connected to 10G (MTU=9k)
All network settings are correct...
When I create VM (Linux,Windows) with different drivers (scisi,virtio,sata) and different additional settings of virtual disk itself and its formats (qcow2,raw... ) inside guest OS I get very low write speed in 4K blocks (tested with FIO tool) this is command to check it
If you run the tests on the host itself, the speeds are reasonable 250MB/s+
I would be extremely grateful if someone could tell me what the problem is... I've been suffering for a month now and looking for a solution...
All network settings are correct...
When I create VM (Linux,Windows) with different drivers (scisi,virtio,sata) and different additional settings of virtual disk itself and its formats (qcow2,raw... ) inside guest OS I get very low write speed in 4K blocks (tested with FIO tool) this is command to check it
(fio -- name=fio-test --rw=write --bs=4k --iodepth=1 --numjobs=1 --direct=1 --randrepeat=0 --norandommap=1 --group_reporting=1 --thread --stonewall --ioengine=windowsaio --runtime=60 --time_based=1 --filename=testfile --size=1G) speed is no higher than 60MB/sIf you run the tests on the host itself, the speeds are reasonable 250MB/s+
I would be extremely grateful if someone could tell me what the problem is... I've been suffering for a month now and looking for a solution...